Fri Nov 08 12:46:21 UTC 2024: ## Astronaut Sunita Williams Enjoys 16 Sunrises and Sunsets a Day on Extended ISS Mission

**Houston, Texas** – NASA astronaut Sunita Williams, currently on a prolonged mission aboard the International Space Station (ISS), is experiencing a truly unique perspective on the Earth’s day and night cycle. Due to delays in the Boeing Starliner spacecraft’s return, Williams’ stay in orbit has been extended until February 2025. This extra time has given her the opportunity to witness the extraordinary spectacle of 16 sunrises and sunsets within a single 24-hour period.

Williams, who previously shared her experience with multiple sunrises and sunsets during a 2013 visit to the University of Gujarat, explained the phenomenon: “The ISS orbits Earth every 90 minutes, meaning we see a sunrise or sunset every 45 minutes.” This rapid journey around the planet allows astronauts to experience the transition from Earth’s dark side to the sunlit side and back again.

This constant cycle of light and darkness differs greatly from the familiar 12-hour day/night pattern on Earth. Astronauts on the ISS experience 45 minutes of daylight followed by 45 minutes of darkness, repeatedly throughout their day.

While the Earth’s natural rhythms are absent, astronauts rely on Coordinated Universal Time (UTC) to structure their days. Their daily routines are highly organized, with work, meals, and rest scheduled in five-minute intervals. This rigorous routine helps maintain physical and mental health in the unique environment of space. To maintain synchronization with teams on Earth, astronauts utilize atomic clocks for precise timekeeping and navigation.

Williams and fellow astronaut Butch Wilmore are utilizing the extended mission to conduct vital research and explore the remarkable experiences space offers. Their journey showcases the awe-inspiring view from the ISS and provides a glimpse into the unique challenges and opportunities of life beyond Earth.

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